Bag-filling machine



My N 1929. P. NAEHER BAG FILLING MACHINE 'Filed Nov. 28, 1927 3 Sheets-Sheet nuemtoz 'zcz Mei: er

5 SheetsF-Sheet 2 P. NAEHEIR BAG FILLING MACHINE Filed Nov. 28, 1927 July 2, 1929.

BAG FILLING MACHINE Filed Nov. 28, 1927 5 Sheets-Sheet 3 all Patented July 2, 1929.

UNITEDVSTATES PATENT OFFICE.

PAUL NAEHER, OF CHICAGO, ILLINOIS, ASSIGNOR TO LARROWE MTLLING COMPANY, OF DETROIT, MICHIGAN, A CORPORATION 01 MICHIGAN.

BAG-FILLING MACHINE.

Application filed November 28, 1927. Serial No. 236,279.

This invention relates to bag filling machines equipped with means for compacting the material within the bags during the filling operation, and is an improvement upon the type oi machine disclosed in Patent No. 1,616,016. In the patented device only a single bag can be taken care of at onetime whereas in the present construction means are provided for simultaneously filling and packing two bags. It will therefore be readily apparent that with the present device production will be greatly increased without materially increasing the cost of operation.

Various other advantages and novel details of construction of the invention will be made more apparent as the description proceeds especially when considered in connection with the accompanying drawings wherein:

Figure l is a plan view of the machine;

Figure 2 is a side elevation thereoi;

lhigure 3 is a section on line 3-3 of l igure 1;

l igure d is a section on line 4-4 of Figure 1; and

Figure 5 is a diagram giving an exaggerated illustration of the operation of the machine.

in general, the machine comprises a supporting frame, a rockable frame mounted thereon and provided with a pair of bag supporting platforms located at opposite ends thereof. The arrangement is such that the actuation of the rockable trance will impart to the platforms like gyratory movements in opposite directions for etl'ecting the impacting oi the materials discharged into the bags.

in detail, the machine comprises a bed frame it) having mounted thereon, a rocker itrame 11 provided at opposite ends with bag receiving platforms 12 which are in turn provided with upwardly extending side walls 13. The bags to be tilled are placed upon the platforms with the mouth portion of each bag surrounding one of the spouts 14. AS the material is introduced into the bags, each platform is given a gyratory movement in a vertical plane and in a direction to press the side wall against the bag on reversal from downward to upward lIlOVGIllElll oi? the plat term. This movement edectually compacts the material by inertia and without displacement or" the bags in relation to their supports.

i or accomplishing this result the bed frame is provided with spaced side members 15 upon ,which are suitably journalled crankshafts 16 and 17 Inwardly of the side members, the shaft 16 is provided with eccentric portions or cranks 18 mounted in bearings 19, said bearings being directly secured to the side bars 20 of the rocker frame 11. The shaft 17 is also provided with eccentric portions 21 suitably journalled in bearings 22. These bearings iowever, are not directlysecured to the rocker frame as in the case of the bearings 19, but instead, are provided with links or extensions 23 projecting through openings 2 1 in the side bars 20 and pivotally connected to the side bars below the openings by means of pins 25. Each pin preterably has one end secured in a downwardly extending flange 26 ot the corresponding cross bar, while the other end of the pin is secured in a boss 27 formed on the side of a gear case 28.

As clearly shown in Figure l, the gear case 28 encloses a pair of intermeshing gears 29 secured upon intermediate concentric portions of the shafts l6 and l'i respectively these gears being adapted to rotate in the directions indicated by the arrows. Any suit able means such-as the motor 30 may be utilized for operating the machine, through the sprocket gearing 31 connected to the shaft 16.

Referring now to Figure 5, a detail operation of the u'iachine is given herewith. This figure shows the rocker frame and platforms as a single line 32. The cranks l8 and 21 are indicated as 33 and 34; respectively, while one oi the links 23 is designated at 35 and the connection of the link with the rocker trams below the surface thereof is indicated by the connection of the lines 35 and 36 with a line 37 extending from the side of the line 32. la order to show the various positions ot the parts during operation as clearly as possible the eccentricity of the cranks has been greatly exaggerated.

As the cranks move around the dotted circles 38 and 39 in the directions indicated by the arrows, the outer ends of the platforms will pass along the curves indicated at dd and 41. During the operation, at one instant the cranks and the ends oi. the platforms will pass through the points indicated by the letters a, and at various succeeding instants through the points 5, 0, cl, 6, 9' and h, the points in the several orbits in which the several parts are found at a given instant all being indicated by the same letter.

It wil be apparent that while at one instant the distance between the two cranks, in the ositions indicated at a, a on the circles tween the centers of the circles 38 and 39, at another instant the distance between the cranks in the positions indicated at c, c on the circles, will be equal to the length of the hypotenuse of a right-triangle whose legs are equal in len th to the distance between the centers of t e circles and the diameter of the circle 39, respectively. The distance between thecranks reaches its minimum also in the positions 0, e and its maximum also in the positions g, g.

Due to the illustrative exaggeration of the eccentricity of the cranks, the horizontal dis-. tance across the orbits 40 and 41 of the ends of the platforms has been similarly exaggerated. In an actual construction, the movement of a point on the platform is more accurately indicated by the curve 42. The actual curve will vary somewhat as the dimensions of the various parts are varied.

From the foregoing, it will be, apparent that with the above described machine, a double compacting movement is effected whereby a pair of bags may be simultaneously filled and packed, thus permitting one machine to do the work which it has heretofore taken two machines to accomplish.

What I claim as my invention is:

1. In a machine for compacting materials in bags, the combination of a pair of bag supporting platforms, a rockable frame upon which said platforms are supported, and means for imparting similar gyratory movements to said platforms in opposite directions.

2. In a machine for compacting materials in bags, the combination of a rockable support, a pair of bag supporting platforms mounted on opposite ends of said support and means for imparting a similar. gyratory movement to each of said platforms in a direction opposite to that of the other platform.

3. In a machine for compacting materials in bags, the combination of a bed frame, a rocker frame supported intermediate its ends upon said bed frame, a pair of bag supporting.platforms mounted reversely upon said rocker frame, and means for imparting similar gyratory movements to said platforms in opposite directions. 1

4. In a machine for compacting materials in bags, the combination of a bed frame, a rocker frame journalled intermediate its ends upon said bed frame, a pair of bag sup orting platforms located at opposite ends 0 said, rocker frame, and means or imparting similar gyratory movements to said platforms in oppositedirections.

5. A machine for compacting materials 1n parting similar 38 an 39, will be equal to the distance besaid bags com rising a bed frame, a rocker frame supporte upon said bed frame, a pair of bag supporting platforms mounted at opposite ends of said rocker frame, and meansfor imatory movements to said platforms inclu ing a pair of crank shafts ournalled in said bed frame and having their crank portions connected to rtions of said rocker frame, and intermes ing gears carried on said shafts for effecting a rotation thereof in o ite directions.

6. A mac me for compacting materials in bags comprising a bed frame, a rocker frame supported intermediate its ends u n said bed frame, a pair of bag supporting p atforms located at opposite ends of said rocker frame, and means for imparting similar gyratory at orms including a movements to said 1 crank shaft journall in said bed frame and having its crank portions directly connected to said rocker frame, a second crankshaft journalled in said bed frame and extending parallel to said first mentioned shaft and hav- 1ng arms projecting therefrom'and pivotally connected to said rocker frame, and intermeshing gears carried by said shafts for effecting a rotation of said shafts in opposite directions.

7 A machine for compacting materials in bags com rising a. bed frame, a rocker frame supporte upon said bed frame, a pair of bag supporting platforms mounted at 0 posite ends of said rocker frame, a pair 0 crank shafts journalled in said bed frame and having their crank ortions connected to portions of said rocker rame and means, for efiecting a rotation of said crank shafts in opposite directions for rocking said frame whereby similar ratory movements will be imparted to ag supporting platforms in opposite directions. a

8. In a machine for compacting materials in containers, the combination of a rockable frame for supporting said container, and means for imparted slmilar gyratory movements to said frame upon opposite sides of the center thereof.

9. In a machine for compacting materials in bags, the combination of a bed frame having spaced frame members, a rocker frame extending lon itudinally of and supported between said rame members, t:(pair of bag supporting platforms moun reversely upon said rocker frame, and means for imparting similar gyratory movements to said platforms in o posite directions.

10. In a mac hine for compactingmaterials in bags, the combination of a bed frame, a rocker frame supported intermediate its ends upon said bed frame, a pair of bag supporting platforms mounted reversely upon said rocker frame, each of, said platforms being provided with a base and a vertical wall pro 'ecting upwardly therefrom against which a bag is adapted to rest, and means for imparting a similar gyratory movement to each of shafts connecting said rocker frame to said said platforms in a direction opposite to that bed frame, and means for rotating said shafts of the other platform. to actuate said rocker frame for imparting 10 11. A machine for compacting materials in similar gyratory movements to said plat- 5 bags comprising a bed frame, a rocker frame, forms in opposite directions.

a pair of bag supporting platforms mounted In testimony whereof I affix my signature. reversely upon said rocker frame, a pair of PAUL NAEHER. 

